Combination intake-manifold and heating-casing.



I H. M. SMITH. COMBINATIONINTAKE MANIFOLD AND HEATING CASING. APPLICATION FILED MAY 20. 1916.

1,220,281. Patented Mar. 27, 911.

III

HINE M. SMITH, OF SPARTA, MICHIGAN.

COMBINATION INTAKE-MANIFOLD AND HEATING-CASING.

Specification of Letters Patent.

Patented Mar. 27, 191 '7.

Application filed Kay 20, 1916. Serial No. 98,769.

To all whom it may concern:

Be it known that I, Hmn- M. SMITH, a citizen of the United States of America, residing at Sparta, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Combination Intake-Manifolds and Heating-Casings; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to an improved intake manifold for an internal combustion engine in combination with a. housing or casing for said manifold into which the exhaust gases from the engine enter, it being the object and purpose of this construction I to supply heat and raise the manifold to a take manifold such that fuel very high temperature whereby fuel carried therethrough receives a great amount of heat, so much in fact that many fuels not now possible of use, in a practical way, in internal combustion engines are made available, being fully vaporized by the heat before entering the cylinders of the engine. A further object of the invention consists in the provision of a novel construction of inpassing therethrough will be thrown against the walls of the manifold and'especially at points against which the exhaust gases from the engine directly contact.

Various other objects and purposes togetherwith novel construction and arrangement of parts will appear as a description of the preferred embodiment of the invention shown in the accompanying drawing progresses.

In the drawing:

Figure 1 is a plan view of an internal combustion engine having myinvention applied thereto.

Fig. 2 is a side view of the upper part of an internal combustion engine having the invention thereon the inclosing casing for the manifold being shown in vertical section, and

Fig. 3 is a detail in section of asafety valve applied to the manifold.

Like reference characters refer to like parts throughout the several views of the drawings. p

In the construction as shown an internal combustion engine indicated at 1 has securedv to one side and near the upper portion of the engine the. hollow casing 2 with which the exhaust pipe 3 leading to the outside atmosphere communicates, the exhaust gases from the engine entering this casing through the openings 4 in the side of the casing said openings communicating with the exhaust ports. The intake manifold is comprised of a vertical tubular section 5 to the'lower end of which the usual carburetor is adapted to be attached, this section extending upwardly and passing through the lower wall of the casing 2 and being then bent to one side as shown at 6 passing over one of the openings 4 so that exhaust gases coming through this opening strike directly against the section 6. Near the upper wall of the casing the manifold is forked leading in both directions and forming the arms 7 which lie horizontal and close to the upper wall of the casing and lengthwise thereof. The arms 7 are turned to form bends 8 adjacent each end of the casing whereby there is formed a return section 9 at each end extending toward the part 6 to a point substantially midway between two of the exhaust ports 4 then turning inwardly'at 10 and communicating with the cylinders of the engine. The bends at 8 pass over the openings 4 adjacent each end of the casing it being clear from this construction that the exhaust gases also strike directly against the intake manifold at these points.

With a construction of this character the mixed fuel and air entering through the tube 5 are drawn upwardly and first strike against the bend in the section 6 at the point where it is heated to its highest degree of temperature, then divides and passes through the arms 7 until turned around the bends at 8 being carried against these points which are heated by direct contact of the exhaust gases. Accordingly at all times after the engine is well started the fuel passing through the intake manifold receives a great amount of heat and enters the cylinders of the engine in perfect condition. for ignition.

I have provided a safety attachment to the manifold there being a vertical extension 11 directly abovethe section 6 and passing through the upper. wall of the casing 2 on which is threaded a housing 12 in which is located a valve 13 normally closing the passage into the manifold. If at any time a back fire or other explosion should take place the valve permits the escape of the gases. This safety device is not an essential feature of my invention, however, and is used merely as a precaution against any premature or unusual explosion of gases.

With a construction of the character described I have been able in practice to run an internal combustion engine as satisfactorily on kerosene and other hydro-carbon .oils having a high vaporizing temperature as on gasolene, the exhaust gases from the engine at their very highest degree of temperature coming into direct contact with the intake manifold at a number of points and keeping it at a sufficiently high degree of temperature to completely vaporize the fuel before it passes into the engine cylinders. The attachment is of very simple construction yet fully efiicient for the purpose dcscribed.

I claim: I

1. In combination with an internal combustion engine, an intake manifold including a depending tubular section to which a carbureter is adapted to be attached, said section adjacent its upper end being bent laterally and then forked to provide oppositely extending horizontal arms each of which at its outer end is bent back upon itself for a distance and then turned inwardly communicating with the cylinders of the engine, a hollow casing secured to the engine and inclosing the upper part of the manifold, said casing on its side adjacent the engine having openings communicating with the exhaust ports of the engine, one of the openings lying under said laterally bent section, and other of said openings lying under the bent back ends of the manifold, and an outlet pipe leading from the casing. 2. In combination with an internal combustion engine, an intake manifold including a depending tubular section, arms extending from the upper end of said section in opposite directions, said arms at their ends being bent back underneath and extended toward each other and then turned inwardly, communicating with the cylinders of the engine, and a hollow casing 1nclosing the upper part of the manifold, said casing on its side adjacent the engine having openings through which the exhaust gases from the engine may enter part of said openings being disposed directly under parts of the manifold, and an outlet to the casing. a

3. In combination with an internal combustion engine, an intake manifold including a vertical tubular section, arms extending in opposite directions from the upper end of said section, said arms being bent back at their outer ends for a distance and then turned inwardly to communicate, with the engine cylinders, a hollow casing connected to the engine and inclosing said arms, and provided with openings through which exhaust gases of the engine enter the casing, and an outlet pipe leading from the casing.

4. In combination with an internal combustion engine a hollow casing secured to the engine and having openings therethrough for communication with the exhaust ports of the engine, one of said openings being located adjacent each end of the casing, and intermediate openings between said end openings, a depending tubular member passing through the lower wall of the casing and over one of the intermediate openings being bent laterally over said opening to form a curved section against which fuel entering through the member strikes, said section being directly heated by exhaust gases as they come through the opening, branches extending laterally to each side of the upper end of the tubular member toa point closely adjacent the ends of the casing, each of said branches at its end being curved downwardly and then back under the branch, passing over an end opening at the curved portion and thence leading inwardly to the cylinders of the engine, substantially as described.

In testimony whereof I aflix my signature.

HINE M. SMITH. 

